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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

28卷

期数:

2011年02期

页码:

69-74

栏目:

出版日期:

2011-06-20

文章信息/Info

Title:

Pushover Analysis Method Considering Strain Rate Effect

作者:

王文明,李宏男

大连理工大学 建设工程学部,辽宁 大连 116024

Author(s):

WANG Wen-ming, LI Hong-nan

Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

关键词:

Pushover分析;  应变率效应;  1/4循环;  平均应变率;  逐步增量非线性时程分析

Keywords:

Pushover analysis;  strain rate effect;  1/4 cycle;  average strain rate;  incremental dynamic analysis

分类号:

TU375

DOI:

-

文献标志码:

A

摘要:

基于结构动力学原理,提出了一种在Pushover分析中考虑应变率效应的方法:首先,对结构进行不考虑应变率效应的Pushover分析; 然后,计算顶点位移为D_i时,1/4循环的时间和关键点在1/4循环内的应变变化量,根据关键点在1/4循环内的平均应变率对模型进行修正,进行第2次Pushover分析,得到Pushover曲线上的一个点(D_i,V_i),改变D_i的值,按照该方法得到一系列Pushover曲线上的点; 最后,将各个点用光滑曲线连接,得到结构考虑应变率效应的Pushover曲线。采用一个钢筋混凝土模型对该方法得到的Pushover曲线和逐步增量非线性时程分析方法得到的结果进行了对比。结果表明:该方法具有合理性。

Abstract:

Based on the dynamic theory of structures, a Pushover analysis method considering strain rate effect was proposed. Firstly, Pushover analysis of the structure without considering strain rate effect was performed. Secondly, the variance of strain at the important points in the 1/4 cycle and the duration of the cycle corresponding to the top displacement D_i were calculated, then the model could be modified according to average strain rates of the important points; Pushover analysis of the structure for the second time was performed, and a point(D_i,V_i)in the Pushover curve could be obtained; the value of D_i was changed, and many points could be got according to the method. Finally, the Pushover curve of the structure considering strain rate effect by connecting these points with smooth curve was obtained. Using a reinforced concrete model, the Pushover curve obtained by the method in the paper was compared with the result obtained by incremental dynamic analysis. Results show that the method is rational.

参考文献/References:

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相似文献/References:

[1]张皓,李宏男.考虑应变率效应的钢筋混凝土框架结构弹塑性地震反应分析[J].建筑科学与工程学报,2011,28(03):74.
　ZHANG Hao,LI Hong-nan.Elastic-plastic Seismic Response Analysis of Reinforced Concrete Frame Structure with Strain Rate Effect[J].Journal of Architecture and Civil Engineering,2011,28(02):74.
[2]周宏宇,袁 慧,邢晓帅,等.钢筋混凝土柱轴心受压动态破坏尺寸效应[J].建筑科学与工程学报,2019,36(05):62.
　ZHOU Hong-yu,YUAN Hui,XING Xiao-shuai,et al.Size Effect of Dynamic Failure of Reinforced Concrete Column Under Axial Compression[J].Journal of Architecture and Civil Engineering,2019,36(02):62.

备注/Memo

备注/Memo:

收稿日期:2011-03-10
基金项目:国家自然科学基金重大研究计划项目(90815026); 国家地震专项科研项目(200808074); 高等学校学科创新引智计划项目(B08014)
作者简介:王文明(1987-),男,山东沂南人,工学博士研究生,E-mail:wangwenming87110@163.com。

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更新日期/Last Update: 2011-06-20